我如何將以下T-SQL語句轉換為Linq

Question

這是我的SQL語法

select DepartmentId, max(fromdate) from iwof.DateSnippet group by DepartmentId 

這就是我得到的結果

1   2013-09-09 14:53:52.813 
2   2014-02-07 14:37:21.740
3   2014-02-07 14:37:21.737
4   2014-02-07 14:37:21.740
5   2014-02-07 14:37:21.743
6   2014-02-07 14:37:21.743

Answer 1

您使用的語法不正確。 格式化更接近這個，它應該可以解決問題

var results = from p in iwof.DateSnippet
          group p by p.DepartmentId into g
          select new { DepartmentId = g.Key, MaxFromDate = g.Max(fromdate) };